Boat

Have Boat Questions? Ask a Boat Repair Expert.

Ask an Expert,
Get an Answer ASAP!

Boat

I have a 2011 Yamaha 4 stroke 150 horse 100 hours on it starts

Customer Question
fine runs great until I...
I have a 2011 Yamaha 4 stroke 150 horse 100 hours on it starts fine runs great until I put it in gear and then it becomes just a little rough give it more gas runs fine but really don't like the vibration and rough idle when cruising canals..Can you help
Submitted: 2 years ago.Category: Boat
Show More
Show Less
Ask Your Own Boat Question
Answered in 6 hours by:
6/21/2015
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3,994
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
Verified
Hello, my name is***** will be assisting you today. You didn't mention if the engine has always done this or just started recently. If it is recent, has anything at all changed on the engine?
Ask Your Own Boat Question
Customer reply replied 2 years ago
No nothing has changed it started at the end of last year
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
Was there a slight impact with the bottom or a log?Or a new prop installed?Have you owned the engine since new?
Ask Your Own Boat Question
Customer reply replied 2 years ago
No new prop it actually looks fine and isn't bent the vibration come from a idel when I'm going really slow
Customer reply replied 2 years ago
As soon as I give it gas it goes away
Customer reply replied 2 years ago
So it an rough idel at idel speed
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
I understand. There is an issue that most four stroke engines have and that is clutch rattle. This happens normally when just in gear and the engine, although it looks like it is running a constant RPM is actually not. It is surging and stalling, as the flywheel speeds up and down, so does the drive shaft. This en-turn also speeds up the pinion gear. The weight of the prop will keep it turning at a fairly smooth speed, yet as the flywheel speds up ans slows down, you get clutch rattle. This is a normal occurrence for these engines. The way to combat this is to get a prop hub that will adsorb the rattle. Does all that make sense?
Ask Your Own Boat Question
Customer reply replied 2 years ago
Yes and no It hasn't had this issue in the past so it seems like I can be fixed without a prop hub but I will look into it
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
Also if the engine idle RPM has slowed by just 50, that can also do it. Make sure that the prop is still really tight on the shaft as well.
Ask Your Own Boat Question
Customer reply replied 2 years ago
I could sent you s video of it tomorrow?
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
Sure. Can you upload it here or to a site like youtube and then just send me the link.
Ask Your Own Boat Question
Customer reply replied 2 years ago
Will do for sure
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
Sounds great. I will look for it.
Ask Your Own Boat Question
Customer reply replied 2 years ago
I will send you the video this week, Sorry its taken me so long the weather has been awful
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
No worries. There are no time limits here.
Ask Your Own Boat Question
Ask Charles Your Own Question
Charles
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3,994
3,994 Satisfied Customers
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.

Charles is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Ted G.

Ted G.

Rigger, Diagnostician

691 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

15,567 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

10,957 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,728 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

< Previous | Next >

Related Boat Questions
Changing seals between halves on a alpha gen 2, how much end
changing seals between halves on a alpha gen 2, how much end play should be on the lower half shaft that mates to the upper, this one seems to have a lot of end play for a 2014 with a 100 hours … read more
Matthew John
Matthew John
Cert II Electronic Engineering
38 satisfied customers
I had a cam shaft break into, the mechanic I use said he has
I had a cam shaft break into , the mechanic I use said he has never seen this , I had a parts Mtr from one that slung a rod awhile back , but I cannot find how to position the cams to the crank shaft… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
I have a question.... I read the question about basis bmw
I have a question.... I read the question about basis bmw engine for the Yanmar 260 6by shortblock. I am in the same situation, though My yanmar engine is the updated version 2. Boat is from 2008, so … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
I just bought a new 2018 115 4 stroke merc and ask the shop
I just bought a new 2018 115 4 stroke merc and ask the shop to put in a switch for a second battery( 1100 miles away) I just looked and the switch has a neg cabel in the middle slot and a black ground… read more
Matthew John
Matthew John
Cert II Electronic Engineering
38 satisfied customers
Can you tell me if a 2004 4.3L MPI Mercruiser is Smartcraft
can you tell me if a 2004 4.3L MPI Mercruiser is Smartcraft enabled … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
Steering on Yamaha 300 suddenig took twice as many turns of
Steering on Yamaha 300 suddenig took twice as many turns of steering as before. What would cause this? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
I have a 2008, 200 hp Mercury verado. It just started
I have a 2008, 200 hp Mercury verado. It just started throwing an alarm saying fault ignition. Can anybody help me figure out where to start to find the problem?… read more
Matthew John
Matthew John
Cert II Electronic Engineering
38 satisfied customers
I have a lowrance hook 7 what is the best setting for fish
i have a lowrance hook 7 what is the best setting for fish finder in salt water … read more
Matthew John
Matthew John
Cert II Electronic Engineering
38 satisfied customers
Water in flywheel compartment. Is there a drain hole?
Water in flywheel compartment JA: Sometimes things that you think will be really complicated end up being easy to fix. The Marine Mechanic I'm going to connect you with knows all the tricks and shortc… read more
Boat Doc
Boat Doc
106 satisfied customers
I need a TOHATSU guru.....u got one? Specifically for 70-90
just that I too am a marine technician so I haven't just recently fallen from the proverbial turnip truck… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
I have a Yamaha 2017 150 hp 4 stroke engine on my boat and
Hi. I have a Yamaha 2017 150 hp 4 stroke engine on my boat and was wondering what I have to do to winterize the engine? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
I want to continue fishing for rockfish until Jan 1 and i
I want to continue fishing for rockfish until Jan 1 and i need to know if I need to drain the cooling system on my 150 hp Yamaha outboard after every trip or is it self draining. I keep it on a lift w… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
I left a question about my boat yesterday, and so far the 6
I left a question about my boat yesterday, and so far the 6 min reply time is now over 24 hrs, Did you get my problem with my boat motor? or should I try again?...Dick S.… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
Here is a link to a video of the Optus coughing at idle. Any
Hey Matt here is a link to a video of the Optus coughing at idle. Any ideas? https://youtu.be/2WHBKTRjDxw… read more
Matthew John
Matthew John
Cert II Electronic Engineering
38 satisfied customers
I got 250hp yamaha 2003 direct injection. No going more than
Was working only on 4cyl i changed the control switch now ok on 6cyl but no power after 20min drive increases to 5000… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
I had a 12' hd came new on my skeeter and it started
I had a 12' hd came new on my skeeter and it started flashing and would just go black so dealer took it out and sent it to lowrance. meanwhile they talked me into going with 16' carbon then same probl… read more
MarineService8
MarineService8
34 satisfied customers
Have a 2006 evinrude 200 etec the power trim has allways
have a 2006 evinrude 200 etec the power trim has allways worked fine but all of at once it now will not lower or raise when unde power.it works fine if i put in neutral. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,567 satisfied customers
I have a omc colbra with a v6 4.3 litre chev. Not pumping
I have a omc colbra with a v6 4.3 litre chev. Not pumping water to motor from impeller which has just been replaced.… read more
Jeremy R
Jeremy R
1,069 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x